US3536300A - Apparatus for continuously mixing powders and oils to make putty - Google Patents

Apparatus for continuously mixing powders and oils to make putty Download PDF

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Publication number
US3536300A
US3536300A US743209A US3536300DA US3536300A US 3536300 A US3536300 A US 3536300A US 743209 A US743209 A US 743209A US 3536300D A US3536300D A US 3536300DA US 3536300 A US3536300 A US 3536300A
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United States
Prior art keywords
mixture
extrusion
mixing
putty
continuously
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US743209A
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English (en)
Inventor
Donald Ainsworth
Trevor Blewett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vallance and Co Morley Ltd
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Vallance and Co Morley Ltd
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Filing date
Publication date
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Publication of US3536300A publication Critical patent/US3536300A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/425—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw surrounded by a casing provided with grooves or cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
    • B01F27/725—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two or more helices in respective separate casings, e.g. one casing inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
    • B29C48/525—Conical screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/686—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having grooves or cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/688—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having threads

Definitions

  • This invention relates to the mixing of powdered and liquid constituents of putty.
  • the usual mixing method now used for putty is to place a batch of powder and oil in a circular milling trough and to gradually force the oil into close admixture with the powder by means of a heavy rotary edge runner. This process takes up to half an hour to mix one batch which is then removed manually and replaced by fresh material. It is an object of the present invention to provide for continuous production of mixtures of powdered and liquid constituents in the manufacture of putty and to reduce considerably the production time for any given quantity.
  • the invention provides a method of mixing comprising the steps of mechanically agitating together measured quantities of the powdered and fluid constituents whilst being conveyed in a continuous stream to produce a premixture, and then continuously forcing this pre-mixture through a plurality of extrusion openings and delivering the final mixture continuously.
  • the mix is subjected to a transverse shearing action to the extrusion operation.
  • the invention also provides an apparatus for carrying out this method, comprising means for continuously feeding measured quantities of the constituents to a pre-mixture trough or tube, rotary agitator means in said trough or tube for continuously mixing the constituents during their travel therethrough, means for transferring the stream of mixture to an extrusion cylinder or the like having a plurality of extrusion openings, screw means in said cylinder for conveying the mixture therealong continuously and for continuously applying the extrusion pressure to the extrusion outlet, and delivery means for delivering the mixture continuously from said cylinder.
  • FIG. 1 represents an elevation of the apparatus
  • FIG. 2 illustrates by fragmentary longitudinal sections the construction of two screw-like devices for mixing and extruding the ingredients
  • FIGS. 3, 5 and 7 are fragmentary longitudinal sections through the extrusion cylinder and its screw means showing three modifications.
  • FIGS. 4, 6 and 8 are sections taken respectively on the lines IVIV, VIVI and VIII-VIII in FIGS. 3, 5 and 7.
  • powdered whiting is fed from a hopper 1 through a rotary measuring feeder 2 into one end of a horizontal trough 3.
  • This trough has a curved bottom and a removable top cover 4 for inspection and cleaning purposes.
  • Extending through this trough is a rotatable mixer shaft 5 around which are secured in a spiral path a series of mixer arms 6 which are so shaped and angled as to co-operate also with the trough bottom to act as a screw conveyor.
  • Linseed oil from a tank 7 is pumped through pipes 8, 9 by a reciprocating pump 10 into the feed end of trough 3 at a predetermined measured rate. If desired pigments may be gravity fed through a pipe or pipes 35 into trough 3.
  • the mixer arms 6 agitate and pre-mix the whiting and oil, the broken form of this screw helping to prevent the mix from jamming in the trough.
  • the arms convey the mixture to the delivery end of the trough where it is pushed through a bottom outlet 11 and transfer duct 12 into the feed end of a horizontal extrusion cylinder 13 which conveniently extends below and parallel to the trough.
  • a rotatable extruder shaft 14 on which is secured a broken screw forming a series of angled paddles 15A, 15B, which work close to the wall of the cylinder.
  • Spanning the cylinder are two axially spaced apart multi-orificed extrusion plates 16, 17 having a plurality of small holes or orifices which may be, for example, 5 mms. diameter in plate 16 and 8 mms. diameter in plate 17.
  • the diameter of the holes in extrusion plate 16 is smaller than that of the holes in extrusion plate 17, the smaller holes building up the extrusion pressure in the first portion of the cylinder and the larger holes assuring the continuous flow of pressurized powdered and liquid constituents without creating an undesirable reduction in the particle size of the powdered ingredients.
  • the shaft 14 passes through these and is journalled in a bearing'18 in a spider support 19 and its outer end carries an archimedian delivery screw 20 which works in a reduced diameter extension 13X of the cylinder 13 having a delivery outlet 21.
  • the paddles 15A are arranged to form a broken screw so as to give a further agitating action and also to force the mixture through the apertures in plate 16 but without risk of the screw jamming.
  • the last paddle 15A ' may work so close to the plate 16 as to exert a shearing action on the mixture to further the mixing operation, and the paddle 15B may operate similarly.
  • FIG. 2 there is shown a pressure cone 31 secured on the shaft 14. This acts to compress the mixture as it approaches the openings in the spider support 19 and also protects the bearing 18 from the longitudinal extrusion pressure.
  • the extrusion cylinder 13 instead of having a smooth cylindrical inner wall, is provided with flutes, channels or ribs extending paraxially or helically so as to cooperate with some at least of the paddles to promote the movement of the mixture along the cylinder and to prevent the mix from binding around the shaft 14 and merely rotating without feeding along, also to exert a high pressure on the mixture and efiect a shearing action thereon. Examples of such arrangements are illustrated in FIGS. 3 to 8.
  • FIGS. 3 and 4 show multiple flutes 32 extending helically in the opposite sense to that of the paddles.
  • FIGS. 5 and 6 show ribs 33 also extending helically in the opposite sense to that of the paddles.
  • FIGS. 7 and 8 show flutes 34 parallel to the cylinder axis.
  • FIG. 1 there is indicated a motor 22 driving the two shafts through transmission gearing in a housing 23.
  • An auxiliary transmission device in a housing 24 transmits a drive through shaft 25 and clutch 26 to the measuring feeder 2 and also through a chain and sprocket connection 27 to the shaft 28 of a crank disc 29 whose crank arm 30 operates the pump 10.
  • the ingredients are pre-mixed by a thorough agitating and mixing action in trough 3 and the mixture is transferred to the cylinder 13 where the mixture is further agitated and mixed, sheared and forced through the plate apertures and forced from the delivery outlet 21 as a continuous flow of compacted putty, the path of the mixture being indicated by the arrows in the drawings.
  • This continuous production can proceed so long as the supply of whiting and oil is maintained, and the time of production is greatly reduced due to the efficient mixing and power extrusion actions.
  • Apparatus for continuously mixing powdered and liquid constituents of putty and delivering the putty in the form of a stream thereof, comprising in combination:
  • a first continuously driven rotary screw means extending longitudinally in said pre-mixing chamber and including a shaft having mixer arms secured therearound in a helical pattern to cooperate with said curved 'bottom for agitating and mixing said constituents and simultaneously conveying them through said pre-mixing chamber to form a mixture in a stream;
  • a second continuously driven rotary screw means in said extrusion chamber including a shaft which extends longitudinally through said extrusion chamber and through said 'multi-orificed plates, and which has secured helically therearound angled paddle devices forming a broken screw with portions thereof located between adjacent ones of said multi-orificed plates, said second screw means simultaneously further mixing said constituents and cooperating with said projections and recesses so as to exert a shearing action on the mixture and propelling the mixture under the pressure serially through said multiorificed plates for further intermixing; and,
  • outlet means at the end of said extrusion chamber for the continuous delivery therefrom of the thoroughly mixed and compacted putty.
  • Apparatus for continuously mixing powdered and liquid constituents of putty and delivering the putty in the form of a stream thereof including a spider support for the shaft of said second screw means located transversely in said extrusion chamber beyond the last of said multi-orificed plates and a cone portion located around said shaft adjacent to said spider support and in advance thereof and diverging in the direction of travel of the mixture for further compressing the 'mixture as it is forced past said spider support.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US743209A 1967-07-26 1968-07-08 Apparatus for continuously mixing powders and oils to make putty Expired - Lifetime US3536300A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34227/67A GB1182148A (en) 1967-07-26 1967-07-26 Mixing Powders and Oils.

Publications (1)

Publication Number Publication Date
US3536300A true US3536300A (en) 1970-10-27

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ID=10362997

Family Applications (1)

Application Number Title Priority Date Filing Date
US743209A Expired - Lifetime US3536300A (en) 1967-07-26 1968-07-08 Apparatus for continuously mixing powders and oils to make putty

Country Status (9)

Country Link
US (1) US3536300A (en:Method)
BE (1) BE718678A (en:Method)
CH (1) CH479328A (en:Method)
DE (1) DE1782125B2 (en:Method)
ES (1) ES356475A1 (en:Method)
FR (1) FR1576722A (en:Method)
GB (1) GB1182148A (en:Method)
NL (1) NL150689B (en:Method)
SE (1) SE355496B (en:Method)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643929A (en) * 1969-02-26 1972-02-22 Shell Oil Co Apparatus for the preparation of agglomerates
US3671020A (en) * 1970-10-09 1972-06-20 Brandt Automatic Cashier Co Apparatus for producing a beverage by mixing a powdered base including sugar and a cold liquid
US4107793A (en) * 1977-05-26 1978-08-15 Monsanto Company Mixer apparatus for continuously coagulating an aqueous latex and consolidating as a paste coagulum
DE3228388A1 (de) * 1982-07-29 1984-02-02 Andreas 8481 Wurz Haubner Vorrichtung und verfahren zur duengemittelmischung
US4801433A (en) * 1985-03-29 1989-01-31 Hitachi, Ltd. Apparatus for reaction including horizontal-type reactor and liquid circulator
US6123445A (en) * 1996-09-16 2000-09-26 Grassi; Frank Dual stage continuous mixing apparatus
US20050073906A1 (en) * 2003-08-21 2005-04-07 Ngk Insulators, Ltd. Screw for extruder, screw extruder, and kneading extruder using the screw extruder
CN112755908A (zh) * 2020-12-22 2021-05-07 莆田市城厢区诚味食品有限公司 一种便于取出肉馅的速冻肉馅加工用搅拌机
CN119034570A (zh) * 2024-10-30 2024-11-29 福建卡乐丽新型建材科技有限公司 一种环保石漆涂料制备装置及其使用方法
CN119305049A (zh) * 2024-12-12 2025-01-14 广东新潮塑胶科技有限公司 一种可降解包装容器生产原料混合设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3423058C2 (de) * 1984-06-22 1994-02-24 Werner & Pfleiderer Vorrichtung zum Dosieren und Mischen von Feststoffen und Flüssigkeiten zu einer Suspension niedriger Viskosität und Verfahren zum Aufbau eines Prozeßdrucks
CN111203120A (zh) * 2020-02-25 2020-05-29 李春丽 一种建筑用搅拌充分的涂料搅拌装置
CN115445525B (zh) * 2022-09-14 2023-10-24 江西海鼎科技有限公司 一种用于对虾养殖池塘肥水的添加剂的生产设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US420453A (en) * 1890-02-04 Administratrix of lester
US1522386A (en) * 1923-07-11 1925-01-06 Swift & Co Apparatus for pasteurizing cheese
US2016920A (en) * 1932-09-22 1935-10-08 Commercial Milling Company Machine for maintaining constant moisture content in a granular material
US2242364A (en) * 1938-06-18 1941-05-20 Montanari Cesare Machine for manufacturing macaroni automatically
US2926619A (en) * 1955-02-21 1960-03-01 American Mach & Foundry Mixing machine
FR1224533A (fr) * 1958-06-02 1960-06-24 Et Oakes Corp Appareil pour mélanger de façon continue des matières solides pulvérisées ou finement divisées avec des liquides
US3288443A (en) * 1964-07-27 1966-11-29 Marco Dev Co Inc Device for mixing and feeding
US3323570A (en) * 1964-05-27 1967-06-06 Tullock Nigral Ray Plastic ingredients mixing and grinding attachment

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US420453A (en) * 1890-02-04 Administratrix of lester
US1522386A (en) * 1923-07-11 1925-01-06 Swift & Co Apparatus for pasteurizing cheese
US2016920A (en) * 1932-09-22 1935-10-08 Commercial Milling Company Machine for maintaining constant moisture content in a granular material
US2242364A (en) * 1938-06-18 1941-05-20 Montanari Cesare Machine for manufacturing macaroni automatically
US2926619A (en) * 1955-02-21 1960-03-01 American Mach & Foundry Mixing machine
FR1224533A (fr) * 1958-06-02 1960-06-24 Et Oakes Corp Appareil pour mélanger de façon continue des matières solides pulvérisées ou finement divisées avec des liquides
US3323570A (en) * 1964-05-27 1967-06-06 Tullock Nigral Ray Plastic ingredients mixing and grinding attachment
US3288443A (en) * 1964-07-27 1966-11-29 Marco Dev Co Inc Device for mixing and feeding

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643929A (en) * 1969-02-26 1972-02-22 Shell Oil Co Apparatus for the preparation of agglomerates
US3671020A (en) * 1970-10-09 1972-06-20 Brandt Automatic Cashier Co Apparatus for producing a beverage by mixing a powdered base including sugar and a cold liquid
US4107793A (en) * 1977-05-26 1978-08-15 Monsanto Company Mixer apparatus for continuously coagulating an aqueous latex and consolidating as a paste coagulum
DE3228388A1 (de) * 1982-07-29 1984-02-02 Andreas 8481 Wurz Haubner Vorrichtung und verfahren zur duengemittelmischung
US4801433A (en) * 1985-03-29 1989-01-31 Hitachi, Ltd. Apparatus for reaction including horizontal-type reactor and liquid circulator
US6123445A (en) * 1996-09-16 2000-09-26 Grassi; Frank Dual stage continuous mixing apparatus
US20050073906A1 (en) * 2003-08-21 2005-04-07 Ngk Insulators, Ltd. Screw for extruder, screw extruder, and kneading extruder using the screw extruder
CN112755908A (zh) * 2020-12-22 2021-05-07 莆田市城厢区诚味食品有限公司 一种便于取出肉馅的速冻肉馅加工用搅拌机
CN119034570A (zh) * 2024-10-30 2024-11-29 福建卡乐丽新型建材科技有限公司 一种环保石漆涂料制备装置及其使用方法
CN119305049A (zh) * 2024-12-12 2025-01-14 广东新潮塑胶科技有限公司 一种可降解包装容器生产原料混合设备

Also Published As

Publication number Publication date
NL150689B (nl) 1976-09-15
FR1576722A (en:Method) 1969-08-01
NL6810490A (en:Method) 1969-01-28
ES356475A1 (es) 1970-01-16
DE1782125A1 (de) 1972-03-23
DE1782125B2 (de) 1972-12-07
GB1182148A (en) 1970-02-25
SE355496B (en:Method) 1973-04-30
BE718678A (en:Method) 1968-12-31
CH479328A (it) 1969-10-15

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